generated: '2026-07-22'
method: searched
source: https://docs.data.nasdaq.com/docs/error-codes
format: custom-codes
description: >-
  The Nasdaq Data Link REST API for tables returns standard HTTP status codes
  plus custom Nasdaq Data Link error codes (QE* prefix) with human-readable
  messages. All requests must be made over HTTPS; requests over HTTP fail.
  Code families: QEL (limits), QEA (authentication), QEP (permissions),
  QES (syntax/parameters), QEC (codes/routes), QEM/QEX (server errors).
status_page: https://status.data.nasdaq.com
errors:
  - code: QELx01
    http_status: 429
    description: You have exceeded your daily call limit as an anonymous user.
  - code: QELx02
    http_status: 429
    description: You have exceeded your daily call limit as a registered user.
  - code: QELx03
    http_status: 429
    description: You have exceeded your daily call limit as a subscriber.
  - code: QELx04
    http_status: 429
    description: You have exceeded your 10-minute call limit as a registered user.
  - code: QELx05
    http_status: 429
    description: You have exceeded your 10-minute call limit as a subscriber.
  - code: QELx06
    http_status: 422
    description: You have requested too many rows of data.
  - code: QELx07
    http_status: 414
    description: Your request query parameters are too long.
  - code: QELx08
    http_status: 413
    description: The amount of data you are trying to return is too large. Narrow the data returned with filters.
  - code: QEAx01
    http_status: 400
    description: We could not recognize your API key. Check your API key (found under account settings) and try again.
  - code: QEAx02
    http_status: 422
    description: Your login credentials are invalid.
  - code: QEAx03
    http_status: 403
    description: You must have an API key to access this resource.
  - code: QEAx05
    http_status: 401
    description: Unauthorized
  - code: QEAx06
    http_status: 429
    description: You have exceeded your daily call limit as a subscriber.
  - code: QEAx07
    http_status: 202
    description: Please try again in 30 seconds.
  - code: QEPx01
    http_status: 401
    description: Protected resource requested in anonymous mode; register for a free account and include your API key.
  - code: QEPx02
    http_status: 403
    description: You do not have permission to use this endpoint.
  - code: QEPx04
    http_status: 403
    description: No permission to view this dataset, or free-trial quota exceeded; subscribe for more views/downloads.
  - code: QEPx05
    http_status: 403
    description: Premium dataset requested in anonymous mode; log in or register and include your API key.
  - code: QEPx06
    http_status: 403
    description: You do not have access to view part of the data requested (e.g., column).
  - code: QESx02
    http_status: 422
    description: Missing required parameter or empty value; check your parameters and try again.
  - code: QESx03
    http_status: 422
    description: Incorrect parameters for creating/updating this resource; check API call syntax.
  - code: QESx04
    http_status: 422
    description: Incorrect query parameters; check API call syntax.
  - code: QESx05
    http_status: 406
    description: Unknown format requested; check the format and try again.
  - code: QESx06
    http_status: 400
    description: Invalid cursor or page ID used with your query.
  - code: QESx07
    http_status: 422
    description: Unsupported operator for your query parameters.
  - code: QESx08
    http_status: 422
    description: Attempted to filter a column that is not available for filtering.
  - code: QESx09
    http_status: 400
    description: The syntax of your query parameters is incorrect.
  - code: QECx01
    http_status: 400
    description: Unknown API route; check your URL and try again.
  - code: QECx02
    http_status: 404
    description: Incorrect Table code submitted; check your Table codes.
  - code: QECx03
    http_status: 404
    description: We could not find the resource you requested; check your URL.
  - code: QECx04
    http_status: 404
    description: The referral code is invalid.
  - code: QECx05
    http_status: 422
    description: The URL you requested is incorrect; an alternative URL may be presented.
  - code: QECx06
    http_status: 404
    description: This dataset has been deprecated and cannot be called; contact clientsuccess@nasdaq.com.
  - code: QEMx01
    http_status: 500
    description: Something went wrong; if problems continue contact clientsuccess@nasdaq.com.
  - code: QEXx01
    http_status: 503
    description: The request took too long; try again later.
  - code: QEXx02
    http_status: 502
    description: We are experiencing connectivity issues; try again later.
  - code: QEXx03
    http_status: 500
    description: Something went wrong; if problems continue contact clientsuccess@nasdaq.com.